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420848-43-7

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420848-43-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 420848-43-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,2,0,8,4 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 420848-43:
(8*4)+(7*2)+(6*0)+(5*8)+(4*4)+(3*8)+(2*4)+(1*3)=137
137 % 10 = 7
So 420848-43-7 is a valid CAS Registry Number.

420848-43-7Upstream product

420848-43-7Downstream Products

420848-43-7Relevant articles and documents

Nitrene-carbene-carbene rearrangement. Photolysis and thermolysis of tetrazolo[5,1- a ]phthalazine with formation of 1-phthalazinylnitrene, o-cyanophenylcarbene, and phenylcyanocarbene

Hoj, Martin,Kvaskoff, David,Wentrup, Curt

, p. 307 - 313 (2014/01/17)

1-Azidophthalazine 9A is generated in trace amount by mild FVT of tetrazolo[5,1-a]phthalazine 9T and is observable by its absorption at 2121 cm-1 in the Ar matrix IR spectrum. Ar matrix photolysis of 9T/9A at 254 nm causes ring opening to gener

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